Any SLA users out there using a viscometer in your lab to take regular viscosity measurements of your resin to accurately, consistently monitor and track the condition of your resin?

What brand and model are you using?Where did you purchase your device?Are you testing directly in the vat?How easy is the device to use and clean?Does your device have the capability to port the data to a PC (to work in a spreadsheet)?Any pro's and con's?